/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:08:49,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:08:49,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:08:49,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:08:49,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:08:49,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:08:49,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:08:49,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:08:49,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:08:49,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:08:49,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:08:49,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:08:49,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:08:49,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:08:49,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:08:49,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:08:49,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:08:49,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:08:49,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:08:49,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:08:49,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:08:49,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:08:49,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:08:49,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:08:49,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:08:49,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:08:49,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:08:49,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:08:49,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:08:49,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:08:49,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:08:49,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:08:49,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:08:49,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:08:49,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:08:49,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:08:49,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:08:49,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:08:49,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:08:49,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:08:49,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:08:49,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:08:49,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:08:49,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:08:49,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:08:49,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:08:49,622 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:08:49,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:08:49,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:08:49,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:08:49,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:08:49,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:08:49,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:08:49,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:08:49,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:08:49,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:08:49,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:08:49,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:08:49,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:08:49,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:08:49,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:08:49,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:08:49,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:08:49,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:08:49,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:08:49,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:08:49,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:08:49,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:08:49,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:08:49,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:08:49,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:08:49,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-25 00:08:50,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:08:50,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:08:50,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:08:50,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:08:50,126 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:08:50,128 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 00:08:50,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a40e7d5a6/c75fe5e9edcf4e708fbca029bfe7c095/FLAG26ea303e0 [2020-09-25 00:08:50,874 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:08:50,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 00:08:50,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a40e7d5a6/c75fe5e9edcf4e708fbca029bfe7c095/FLAG26ea303e0 [2020-09-25 00:08:51,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a40e7d5a6/c75fe5e9edcf4e708fbca029bfe7c095 [2020-09-25 00:08:51,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:08:51,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:08:51,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:08:51,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:08:51,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:08:51,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:08:51" (1/1) ... [2020-09-25 00:08:51,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dffe24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:51, skipping insertion in model container [2020-09-25 00:08:51,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:08:51" (1/1) ... [2020-09-25 00:08:51,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:08:51,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:08:52,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:08:52,341 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:08:52,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:08:52,848 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:08:52,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:52 WrapperNode [2020-09-25 00:08:52,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:08:52,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:08:52,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:08:52,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:08:52,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:52" (1/1) ... [2020-09-25 00:08:52,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:52" (1/1) ... [2020-09-25 00:08:52,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:52" (1/1) ... [2020-09-25 00:08:52,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:52" (1/1) ... [2020-09-25 00:08:52,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:52" (1/1) ... [2020-09-25 00:08:53,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:52" (1/1) ... [2020-09-25 00:08:53,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:52" (1/1) ... [2020-09-25 00:08:53,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:08:53,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:08:53,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:08:53,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:08:53,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:08:53,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:08:53,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:08:53,179 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:08:53,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:08:53,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:08:53,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 00:08:53,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 00:08:53,182 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 00:08:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:08:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:08:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 00:08:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 00:08:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 00:08:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 00:08:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 00:08:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 00:08:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 00:08:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 00:08:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:08:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:08:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:08:56,432 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:08:56,432 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:08:56,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:08:56 BoogieIcfgContainer [2020-09-25 00:08:56,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:08:56,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:08:56,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:08:56,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:08:56,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:08:51" (1/3) ... [2020-09-25 00:08:56,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa7cc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:08:56, skipping insertion in model container [2020-09-25 00:08:56,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:08:52" (2/3) ... [2020-09-25 00:08:56,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa7cc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:08:56, skipping insertion in model container [2020-09-25 00:08:56,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:08:56" (3/3) ... [2020-09-25 00:08:56,468 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-25 00:08:56,482 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:08:56,501 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:08:56,527 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:08:56,571 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:08:56,571 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:08:56,571 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:08:56,571 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:08:56,572 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:08:56,572 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:08:56,572 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:08:56,572 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:08:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states. [2020-09-25 00:08:56,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-25 00:08:56,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:08:56,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:08:56,745 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:08:56,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:08:56,754 INFO L82 PathProgramCache]: Analyzing trace with hash -272093385, now seen corresponding path program 1 times [2020-09-25 00:08:56,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:08:56,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555811243] [2020-09-25 00:08:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:08:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:58,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:59,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:00,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:01,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:02,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:03,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:09:03,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-25 00:09:03,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:09:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5257 [2020-09-25 00:09:03,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:09:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:09:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 283 [2020-09-25 00:09:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-25 00:09:03,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:09:04,890 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-25 00:09:04,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:09:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:09:04,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:05,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:09:05,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 00:09:05,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:09:05,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 00:09:05,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:09:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:09:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:09:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:09:05,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:09:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:09:06,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555811243] [2020-09-25 00:09:06,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:09:06,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:09:06,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271011314] [2020-09-25 00:09:06,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:09:06,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:09:06,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:09:06,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:09:06,283 INFO L87 Difference]: Start difference. First operand 2022 states. Second operand 5 states. [2020-09-25 00:09:23,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:09:23,181 INFO L93 Difference]: Finished difference Result 5340 states and 7124 transitions. [2020-09-25 00:09:23,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:09:23,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 932 [2020-09-25 00:09:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:09:23,235 INFO L225 Difference]: With dead ends: 5340 [2020-09-25 00:09:23,235 INFO L226 Difference]: Without dead ends: 3342 [2020-09-25 00:09:23,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:09:23,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2020-09-25 00:09:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 3340. [2020-09-25 00:09:23,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3340 states. [2020-09-25 00:09:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4200 transitions. [2020-09-25 00:09:23,485 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4200 transitions. Word has length 932 [2020-09-25 00:09:23,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:09:23,488 INFO L479 AbstractCegarLoop]: Abstraction has 3340 states and 4200 transitions. [2020-09-25 00:09:23,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:09:23,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4200 transitions. [2020-09-25 00:09:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2020-09-25 00:09:23,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:09:23,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:09:23,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:09:23,578 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:09:23,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:09:23,579 INFO L82 PathProgramCache]: Analyzing trace with hash -979181030, now seen corresponding path program 1 times [2020-09-25 00:09:23,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:09:23,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15337457] [2020-09-25 00:09:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:09:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:09:23,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:24,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:24,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:25,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:25,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:25,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:26,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:27,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:28,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:28,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:28,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:09:28,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 941 [2020-09-25 00:09:28,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 00:09:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5182 [2020-09-25 00:09:28,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:09:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:09:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-09-25 00:09:28,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 333 [2020-09-25 00:09:28,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 00:09:29,980 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-25 00:09:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:09:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:09:30,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:09:30,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:09:30,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 00:09:30,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:09:30,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 00:09:30,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:09:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:09:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:09:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:09:30,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:09:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:09:31,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15337457] [2020-09-25 00:09:31,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:09:31,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:09:31,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637249933] [2020-09-25 00:09:31,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:09:31,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:09:31,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:09:31,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:09:31,040 INFO L87 Difference]: Start difference. First operand 3340 states and 4200 transitions. Second operand 5 states.